| http://www.w3.org/ns/prov#value | - Thus, there is a problem in that even though apples are kept in a relatively high degree of freshness before shipping, freshnes thereof become lost to some extent when they reach to consumers.The inventor has studied this problem and found that ethylene is produced by biosynthesis due to absorption of oxygen into apples during they become ripe, and that ethylene existing around the apples promotes
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